<template>
  <div class="one-uploadfile">
    <el-upload
      class="avatar-uploader"
      action="#"
      :show-file-list="false"
      :on-success="handleAvatarSuccess"
      :before-upload="beforeAvatarUpload"
    >
      <img v-if="imageUrl" :src="imageUrl" class="avatar" />
      <el-icon v-else class="avatar-uploader-icon"><Plus /></el-icon>
    </el-upload>
  </div>
</template>
  
  <script lang="ts" setup>
import { ref } from "vue";
import { ElMessage } from "element-plus";
import { Plus } from "@element-plus/icons-vue";
import type { UploadProps } from "element-plus";

const imageUrl = ref("");
const handleAvatarSuccess: UploadProps["onSuccess"] = (
  response,
  uploadFile
) => {
  console.log("上传成功");

  imageUrl.value = URL.createObjectURL(uploadFile.raw!);
};

const beforeAvatarUpload: UploadProps["beforeUpload"] = (rawFile) => {
  if (rawFile.type !== "image/jpeg") {
    ElMessage.error("Avatar picture must be JPG format!");
    return false;
  } else if (rawFile.size / 1024 / 1024 > 2) {
    ElMessage.error("Avatar picture size can not exceed 2MB!");
    return false;
  }
  console.log("上传前", rawFile);
  return true;
};
</script>
  
  <style scoped>
.avatar-uploader .avatar {
  width: 80px;
  height: 80px;
  display: block;
}
/* .one-uploadfile {
  margin-bottom: 20px;
} */
</style>
  
  <style>
.avatar-uploader .el-upload {
  border: 1px dashed var(--el-border-color);
  border-radius: 6px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: var(--el-transition-duration-fast);
}

.avatar-uploader .el-upload:hover {
  border-color: var(--el-color-primary);
}

.el-icon.avatar-uploader-icon {
  font-size: 28px;
  color: #8c939d;
  width: 80px;
  height: 80px;
  text-align: center;
}
</style>
  